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4 , <br /> Quarterly Report - Fourth Quarter 2003 <br /> LODITHEATER <br /> 107 North School Street, Lodi, California <br /> 1.0. INTRODUCTION <br /> At the request of Mr Edward Barkett of Lodi City Center 12 LLC,Advanced GeoEnvironmental, <br /> Inc (AGE) has prepared this report of environmental activities at 107 North School Street, Lodi, <br /> California Soil vapor extraction/m-situ air sparging (SVE/LAS) monitoring and sampling events <br /> were performed between October and December 2003 and a ground water monitoring event was <br /> conducted on 27 October 2003 The location of the site and its surroundings are illustrated in <br /> Figure 1 Structures and well locations associated with the site are depicted in Figure 2 <br /> Background information and previous site investigation activities were described in the AGE- <br /> prepared Corrective Action Plan, dated 10 June 1999 <br /> 2.0. PROCEDURES <br /> Field procedures for ground water monitoring and sampling, and soil vapor extraction monitoring <br /> are described below All field work was performed in accordance with Central Valley Regional <br /> Water Quality Control Board(CVRWQCB)guidelines for investigation of underground storage tank <br /> (UST) sites, ground water sampling was conducted in accordance with guidelines for monitoring <br /> well sampling issued by the San Joaquin County Environmental Health Department (EHD) <br /> 2 1 WELL MONITORING AND EVACUATION <br /> On 27 October 2003, a Solinst water level meter was used to measure the depth to ground water in <br /> monitoring well MW-2 relative to the top of the well casing <br /> After recording the water level measurement, a dedicated disposable bailer was used to purge the <br /> monitoring well of standing water Ten gallons of water (a minimum of 3 casing-well water <br /> volumes) were removed from the well Ground water temperature, pH and conductivity were <br /> measured at regular intervals during purging using an Oakton water analyzer Field sheets and data <br /> are included in Appendix A Purged water was stored on-site in labeled, 55-gallon,DOT-approved <br /> drums <br /> 22 COLLECTION OF GROUND WATER SAMPLES <br /> Water samples were collected from the monitoring well using the dedicated disposable plastic bailer <br /> after allowing the well to achieve a minimum 80% recovery of the pre-purge water volume Each <br /> water sample was transferred into 40-m1 volatile organic analysis (VOA) vials containing 0 5 ml <br /> Advanced GeaEnvrronmental,Inc <br />